The poll shows that 5-7% of Americans are really stupid. I’m actually surprised it’s that low.
Ten percent of ANY relatively large group of human beings never get the word.
This statistic cuts across all ethnic, educational, religious, and gender bounds. They are the quintessential low-information voters (the lowest of the low, actually), who by their very presence, tends to depress the dissemination of information in the greater cohort. So there is a sort of multiplier effect here if the flow of information is interrupted or reduced in some way.